Ostial Left Main (LM) Lesion
Patient History
- 87 year old female
- Angina
- Shortness of breath
- Recent NSTEMI
Baseline Angiography
Baseline angiography found chronic total occlusion (CTO) of right coronary artery (RCA) and borderline ostial LM lesion. Visualized best in cranial projections. Caudal projections do not reveal LM disease.
Baseline cranial projection of borderline Ostial LM lesion 
Baseline HD IVUS measurements - MLA: 11.06 mm2 Baseline HD IVUS
Baseline HD IVUS
Baseline HD IVUS of borderline Ostial LM lesion ×
Baseline HD IVUS
Baseline HD IVUS measurements - MLA: 11.06 mm2
Conclusion
Based on HD IVUS measurements the ostial LM lesion was not significant and was left untreated
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